From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB0A9C433EF for ; Thu, 30 Sep 2021 15:07:14 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 268C461881 for ; Thu, 30 Sep 2021 15:07:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 268C461881 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:44468 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVxeT-00035Z-BS for qemu-devel@archiver.kernel.org; Thu, 30 Sep 2021 11:07:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59556) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVxde-0001sV-0x for qemu-devel@nongnu.org; Thu, 30 Sep 2021 11:06:22 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:35285) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVxdZ-0007OY-IQ for qemu-devel@nongnu.org; Thu, 30 Sep 2021 11:06:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633014374; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=hU/gTUjO+mgEv5qfnpk1X/AAH34RwBWB7RbwfMZ/FC8=; b=bkhqhI5rAWoh3gCkouqbALoCgPCwLX6u/4krVkkmAi0wsvlcPt5zJtJQnul3+F3Ja8em/U yhlmqJBBK4Ve11sLVWdgnM4vsqeavepc0l64wGShESNoDeNhu7suapPGoocSad/YHpxAtP eoMR0UYkKL/iavy75hoZN98FnBHVBcY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-387-o8fOxrIUPeKfSsD4IQC2pg-1; Thu, 30 Sep 2021 11:06:07 -0400 X-MC-Unique: o8fOxrIUPeKfSsD4IQC2pg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2DCCF107E1E4; Thu, 30 Sep 2021 15:06:06 +0000 (UTC) Received: from redhat.com (unknown [10.39.195.104]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 63DFF60854; Thu, 30 Sep 2021 15:05:55 +0000 (UTC) Date: Thu, 30 Sep 2021 16:05:52 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Remy Noel Subject: Re: Strange qemu6 regression cauing disabled usb controller. Message-ID: References: <20210930134844.f4kh72vpeknr2vmk@gmail.com> MIME-Version: 1.0 In-Reply-To: <20210930134844.f4kh72vpeknr2vmk@gmail.com> User-Agent: Mutt/2.0.7 (2021-05-04) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Maxim Levitsky , qemu-devel@nongnu.org, Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Sep 30, 2021 at 03:48:44PM +0200, Remy Noel wrote: > Hello, > > I'm encountering a nagging issue with usbredir and a windows guest, but although I did pinpoint the commit that caused the issue, I have a hard time understanding it. > > The issue occurs when a two usbredir devices are added to a guest windows vm. When the second device is added, the UHCI usb controller is disabled by windows with an error code 43 (can be seen with in the usb adapters section of the device manager). > > The commit causing the issue (everything works well when reverting it) is 7bed89958bfbf40df9ca681cefbdca63abdde39d : device_core: use drain_call_rcu in in qmp_device_add. Co-incidentally we've just had another bug report filed today that suggests 7bed89958bfbf40df9ca681cefbdca63abdde39d as a buggy commit causing deadlock in QEMU https://gitlab.com/qemu-project/qemu/-/issues/650 Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|